FluentPlex

fathom

/ˈfæðəm/ verb C2
  1. To measure the depth of (water); to take a sounding of; to sound. (figuratively, transitive)
  2. Often followed by out: to deeply understand (someone or something); to get to the bottom of. (figuratively, transitive) · I can’t for the life of me fathom what this means.
  3. To measure a depth; to sound. (intransitive)
  4. To conduct an examination or inquiry; to investigate. (figuratively, intransitive)

He/she/it fathoms · Past fathomed · Past participle fathomed · -ing form fathoming

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Verb forms

Base form
fathom
He/she/it
fathoms
Past
fathomed
Past participle
fathomed
-ing form
fathoming

From the library

I don’t say that we have fathomed it—far from it—but when we have traced the missing dumb-bell—”
The Valley of Fear, p. 65 · C1
The writer claimed by a momentary expression, a twitch of a muscle or a glance of an eye, to fathom a man’s inmost thoughts.
A Study in Scarlet, p. 17 · B2
Well, I do not know that this place contains any secret which we have not already fathomed.
The Hound of the Baskervilles, p. 201 · C1

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Words, meanings, pronunciations and translations from Wiktionary (CC BY-SA 4.0); how common each word is from wordfreq. Made into this dictionary by FluentPlex.